list1 = [1,2,3,4,5]
for i in range(len(list1)):
    print(list1[i], end=' ')
print()
print('--------------------------')
for i in list1:
    print(i, end=' ')
print()
print('--------------------------')
list1.append(6)
print(list1)

list2 = [8,9]
list1.extend(list2)
print(list1)
print(list2)
list1.insert(2,66)
print(list1)
list1.sort() # 升序 从小到大
print(list1)
list1.reverse() # 反转
print(list1)
list1.sort(reverse=True)

list3 = [14,22,3,4,5]
list4 = sorted(list3)  # 返回一个新列表，原列表不变
print(list3)
print(list4)

num = list4.pop()   # 返回删除的元素
print(num)
print(list4)


set1 = {1,2,3,4,5}
for i in set1:
    print(i, end=' ')

dict1 = {'name':'zhangsan','age':18}
dict1['sex'] = 'male' # add
dict1['age'] = 19     # update
for key, value in dict1.items():
    print(key, value)
